燕山大学学报2016，Vol.40Issue(1)：22-28,7.DOI:10.3969/j.issn.1007-791X.2016.01.004
T10钢表面HVOF喷涂WC-10Co-4Cr涂层的耐磨性研究
Abrasive resistance of WC-10Co-4Cr coating deposited on T10 steel surface by HVOF
摘要
Abstract
The WC⁃10Co⁃4Cr coating was prepared on the T10 steel surface by the High Velocity Oxygen Fuel HVOF spray process.The microstructure of the coating and powders were observed by scanning electron microscopy SEM and X⁃ray diffraction XRD .With the friction wear test the tribological behavior of the coating was discussed under the conditions with oil lubrication and without lubrication.The results show that the WC⁃10Co⁃4Cr coating has many unmelted particles and is highly densified with porosity as low as about 0. 8%. The microhardness of the coating surface presents conventional single⁃mode distribution while the microhardness of the cross⁃section shows bimodal distribution. The microhardness of the coating surface was much higher and more stable than that of the cross⁃section. Under the condition of dry friction and oil lubrication the coefficient of friction for the matrix increases with the load.In contrast the coefficient of friction for the coating decreases and the depth of wear is about 1/3 of that of T10 matrix.Regarding the wear mechanism the WC⁃10Co⁃4Cr coating exhibits abrasive wear while the T10 matrix shows adhesive wear.关键词
T10钢/HVOF/WC-10Co-4Cr/涂层/耐磨性Key words
T10 steel/HVOF/WC-10Co-4Cr/coating/abrasive resistance分类
矿业与冶金引用本文复制引用
李洪波,韩金成,顾勇飞,石晓轩..T10钢表面HVOF喷涂WC-10Co-4Cr涂层的耐磨性研究[J].燕山大学学报,2016,40(1):22-28,7.基金项目
河北省高等学校科学技术研究重点项目 （）
